日本亚细亚社研制成一种可在抄纸机或轧钢机上测量连结板或轧制材料的长度和速度的新型非接触传感器(QGLK100型)并在市场上出售。过去,对连结板或轧制材料的长度和速度的测量,是采用光电元件进行。以两点间测量或轧制速度等为基准,用一种间接方法进行测量,所测得的结果往往是不准确的。社所研制的这种新型传感器,其特点是勿须接触被测物体,且能获得准确的测量结果。这种传感器也称作“相关传感器”,是用两个传感器在两个地点(第1地点宽度为1 Japan Asiatic Society has developed a new non-contact sensor (QGLK100 type) that measures the length and speed of the web or rolled material in a paper machine or a rolling mill and is on the market. In the past, the measurement of the length and speed of the web or rolled material was carried out using photovoltaic elements. Based on the measurement or rolling speed between two points and the like, an indirect method is used for measurement, and the measured results are often inaccurate. The new sensor, developed by the Society, features no contact with the object to be measured and accurate measurement results. This type of sensor, also known as a “related sensor,” uses two sensors at two locations (location 1 has a width of 1